The two railway tunnels will be completely repaired and upgraded for the EBV 2 / EBV S2 gauge. For this purpose, the substructure and superstructure in the portal areas will be renewed. The renewal of the specialist services such as superstructure, catenary, train radio and SA systems as well as the conversion to R catenary and a carriageway renewal on a section adjacent to the Bühlberg tunnel are also part of the present tender.
The two railway tunnels will be completely repaired and upgraded for the EBV 2 / EBV S2 gauge. For this purpose, the substructure and superstructure in the portal areas will be renewed. The renewal of the specialist services such as superstructure, catenary, train radio and SA systems as well as the conversion to R catenary and a carriageway renewal on a section adjacent to the Bühlberg tunnel are also part of the present tender.